VOLCANO, Hawai'i — The bright glow at the summit of Kilauea volcano has been snuffed out by a series of large rockfalls within its crater.

The Hawaiian Volcano Observatory says the rockfalls within the Halema'uma'u vent began Tuesday, producing a seismic signal equivalent to a magnitude-2.4 earthquake.

The rumble was felt at the observatory and the adjacent Jaggar Museum.

Chunks of the vent rim fell into the cavity in the floor of the crater. In all, more than 30 rim collapses were recorded.

Vent collapses are often the result of a drop in the level of lava in the vent, which destabilize its walls.

Kilauea has been erupting on the Big Island for more than 25 years, with its lava creating a plume of steam as it spills into the Pacific Ocean.